Best time to visit Union City, CA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Union City runs from January through December — 12 months of pleasant temperatures and modest rainfall.
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 40m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 36m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 11h 45m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 59m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 2m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 33m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 21m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 13h 27m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 12h 14m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 11h 0m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 56m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 9h 25m
Looking for similar climates? See Union City's climate twins. Or jump straight to the full climate profile.